My Inquiry
My Account
Analog Devices Inc. AD680JR-REEL7
- Part No.:
- AD680JR-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Voltage Reference
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
AD680JR-REEL7.pdf
- Description:
- IC VREF SERIES 0.4% 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,096
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD680JR-REEL7 from Analog Devices is a precision 2.5 V band gap voltage reference IC designed for low-power, high-accuracy data converter applications. It delivers ±10 mV initial accuracy (±0.4%), 25 ppm/°C max temperature coefficient over 0°C to 70°C, 250 μA max quiescent current, and 8 μV p-p low-frequency noise (0.1 Hz to 10 Hz). It operates from 4.5 V to 36 V input and supports use as both a stable reference and a linear temperature transducer via its dedicated TEMP pin.
For engineers reviewing the AD680JR-REEL7 datasheet, AD680JR-REEL7 pinout, AD680JR-REEL7 application, or AD680JR-REEL7 equivalent, key selection considerations include its SOIC-8 package, guaranteed 0°C to 70°C industrial temperature range, integrated temperature output capability, low-noise performance for precision ADC/DAC biasing, and compatibility with battery-powered instrumentation requiring <250 μA supply current.
Technical Context
The AD680JR-REEL7 implements a patented merged-bandgap architecture that integrates the reference core and buffer amplifier into a single compact stage, eliminating external trimming components while achieving high dc stability. Its laser-trimmed thin-film resistors set both initial output accuracy and temperature coefficient, enabling guaranteed drift performance without post-manufacture calibration.
It features a dedicated TEMP pin (Pin 3) delivering 596 mV at 25°C with 2 mV/°C linearity and 12 kΩ output impedance-enabling dual-role operation as a 2.5 V reference and analog temperature sensor. The SOIC-8 package supports surface-mount assembly and includes factory test points (Pins 1, 7, 8) and one no-connect pin (Pin 5).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | 2.500 V ±10 mV - ensures DAC/ADC full-scale accuracy within 0.4% across production units |
| Initial Accuracy | ±10 mV (±0.4%) - laser-trimmed at wafer level for guaranteed error without external calibration |
| Temp Coefficient | 25 ppm/°C max (0°C to 70°C) - limits output drift to ≤6.25 mV over full operating range |
| Quiescent Current | 250 μA max - enables >1-year battery life in 10 mA-hr portable instruments |
| Low-Freq Noise | 8 μV p-p (0.1 Hz–10 Hz) - preserves 16-bit effective resolution in precision measurement front-ends |
| Capacitive Load | 50 nF max - allows direct buffering with standard op amps without instability risk |
| Temperature Pin | 596 mV @ 25°C, 2 mV/°C - provides calibrated analog temperature sensing without additional ICs |
Pinout & Package
AD680JR-REEL7 is housed in an 8-lead SOIC package (JEDEC MS-012AA, R-8), measuring 4.90 mm × 3.90 mm × 1.75 mm, with gull-wing leads and 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 8 | TP (Test Point) | Factory test access only; no user connection permitted |
| 2 | +VIN | Input supply rail (4.5 V to 36 V); requires 0.1 μF bypass capacitor to GND |
| 3 | TEMP | Linear temperature transducer output (596 mV @ 25°C, 2 mV/°C) |
| 4 | GND | Analog ground reference; must connect directly to system ground plane |
| 5 | NC | No internal connection; left unconnected on PCB |
| 6 | VOUT | Stable 2.5 V reference output; capable of sourcing up to 10 mA |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Temperature Sensing | Dedicated TEMP pin enables simultaneous 2.5 V reference + analog temperature measurement in same footprint |
| Laser-Trimmed Stability | Thin-film resistor trimming achieves guaranteed 25 ppm/°C drift and ±10 mV initial error without external components |
| Ultra-Low Power Operation | 250 μA max quiescent current rivals 2-terminal references while delivering full 3-terminal functionality |
| Low-Noise Reference Core | 8 μV p-p (0.1–10 Hz) and 250 nV/√Hz broadband noise preserve dynamic range in 16-bit+ data converters |
| Robust Output Protection | Safe for indefinite short-circuit to GND and momentary short to −VIN, simplifying system fault handling |
Applications
| Portable Data Acquisition | Industrial Sensor Signal Chain |
|---|---|
Use Scenario: Handheld multimeter or battery-powered environmental logger sampling thermocouples and RTDs. IC Role / Device Role / Timing Role: Primary 2.5 V reference for 16-bit Σ-Δ ADC (e.g., AD7701), with TEMP pin used for onboard ambient temperature compensation. Use Value: Enables >1-year battery life due to 250 μA supply current and eliminates need for separate temperature sensor IC. | Use Scenario: Programmable logic controller (PLC) analog input module conditioning 4–20 mA sensor signals. IC Role / Device Role / Timing Role: Precision reference for multi-channel SAR ADCs and isolated voltage outputs; TEMP pin monitors local die temperature for thermal derating. Use Value: ±10 mV accuracy and 25 ppm/°C drift ensure <0.1% total unadjusted error over 0°C–70°C industrial range. |
| Medical Instrumentation | Energy Metering |
Use Scenario: Portable ECG monitor digitizing biopotential signals with high common-mode rejection. IC Role / Device Role / Timing Role: Low-noise 2.5 V reference for instrumentation amplifier and ADC front-end; TEMP pin calibrates gain drift in analog signal path. Use Value: 8 μV p-p (0.1–10 Hz) noise prevents degradation of microvolt-level ECG signal integrity. | Use Scenario: DIN-rail mounted kWh meter performing metrology-grade active/reactive energy calculation. IC Role / Device Role / Timing Role: Stable reference for polyphase energy measurement ICs (e.g., ADE78xx series); TEMP pin validates reference stability during self-test routines. Use Value: Long-term stability of 25 ppm/1000 hr ensures calibration validity over 10-year product lifetime without field recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| REF02CPZ-REEL7 | 2.5 V output, ±5 mV initial accuracy, 25 ppm/°C drift, 1.2 mA quiescent current | Higher power consumption limits use in ultra-low-power portable designs | Preferred when tighter initial accuracy is required and supply current >1 mA is acceptable |
| ADR3425ARJZ-R7 | 2.5 V output, ±3 mV initial accuracy, 10 ppm/°C drift, 120 μA quiescent current, no TEMP pin | Lacks integrated temperature sensing; requires external sensor for thermal monitoring | Chosen for lowest drift and power in space-constrained designs where TEMP functionality is unnecessary |
Compared with REF02CPZ-REEL7 and ADR3425ARJZ-R7, AD680JR-REEL7 uniquely balances moderate accuracy (±10 mV), ultra-low quiescent current (250 μA), and integrated temperature sensing-making it optimal for cost-sensitive, battery-operated instrumentation needing dual-function capability in SOIC-8.
Availability
AD680JR-REEL7 is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, medical diagnostics equipment, and energy metering systems requiring stable component supply with guaranteed 0°C to 70°C operation and reel-based SMT assembly support.
Supply support for AD680JR-REEL7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD680 family was engineered specifically for precision data acquisition systems requiring low-power, high-stability voltage references with integrated temperature monitoring-targeting handheld test equipment, industrial PLCs, and medical sensors.
FAQ
What is the operating temperature range specified for AD680JR-REEL7?
The AD680JR-REEL7 is specified for operation from 0°C to +70°C. This grade guarantees all electrical parameters-including output voltage accuracy (±10 mV), temperature coefficient (25 ppm/°C max), and quiescent current (250 μA max)-within this industrial temperature range. It is distinct from the AD680AR-REEL7, which is rated for −40°C to +85°C.
Does AD680JR-REEL7 provide a temperature output function, and how is it used?
Yes, AD680JR-REEL7 includes a dedicated TEMP pin (Pin 3) that outputs a voltage linearly proportional to temperature: 596 mV at 25°C with a sensitivity of 2 mV/°C. This pin can source or sink up to ±5 μA without affecting the 2.5 V reference output, allowing direct connection to low-bias-current op amps for buffered temperature readout-enabling dual-role use as both reference and sensor.
What is the maximum capacitive load the AD680JR-REEL7 VOUT pin can drive?
The AD680JR-REEL7 VOUT pin is characterized to drive up to 50 nF of capacitive load while maintaining stability. Exceeding this value may cause ringing or oscillation. For loads requiring larger capacitance (e.g., ADC reference decoupling), a series resistor (typically 1–10 Ω) should be added between VOUT and the capacitor to isolate the reference output stage from reactive loading.
Can AD680JR-REEL7 be used with a 3.3 V supply?
No, AD680JR-REEL7 requires a minimum input voltage of 4.5 V to regulate its 2.5 V output. Attempting to operate it from 3.3 V will result in dropout and unregulated output. For 3.3 V systems, consider alternatives such as the ADR3425 (2.5 V, 3.0 V min VIN) or REF3025 (2.5 V, 2.7 V min VIN), both of which are explicitly designed for low-voltage operation.
Is AD680JR-REEL7 pin-compatible with other AD680 variants like AD680AR-REEL7?
Yes, AD680JR-REEL7 is fully pin-compatible with all 8-lead SOIC-packaged AD680 variants (e.g., AD680AR-REEL7, AD680JRZ-REEL7). They share identical pinout (Pin 2 = +VIN, Pin 3 = TEMP, Pin 4 = GND, Pin 6 = VOUT, Pin 5 = NC, Pins 1/7/8 = TP), package dimensions, and solder footprint-allowing direct substitution in existing layouts when grade-specific performance (e.g., temperature range, accuracy) permits.
AD680JR-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Reference Type:
- Series
- Output Type:
- Fixed
- Voltage - Output (Min/Fixed):
- 2.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 10 mA
- Tolerance:
- ±0.4%
- Temperature Coefficient:
- 25ppm/°C
- Noise - 0.1Hz to 10Hz:
- 10µVp-p
- Noise - 10Hz to 10kHz:
- -
- Voltage - Input:
- 4.5V ~ 36V
- Current - Supply:
- 280µA
- Current - Cathode:
- -
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
AD680JR-REEL7 FAQ
1.How can I place an order for AD680JR-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD680JR-REEL7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD680JR-REEL7 reliable?
The price and inventory of AD680JR-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD680JR-REEL7 is usually 5 days.
3.What payment methods are accepted for AD680JR-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD680JR-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD680JR-REEL7?
AD680JR-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD680JR-REEL7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD680JR-REEL7?
For technical support, including AD680JR-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD680JR-REEL7 requirements.
6.How does Aetrix verify that AD680JR-REEL7 is sourced from the original manufacturer or authorized distributors?
All AD680JR-REEL7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD680JR-REEL7 meets industry standards.
7.What is the process for return or replacement of AD680JR-REEL7?
All AD680JR-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with AD680JR-REEL7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD680JR-REEL7 part is unused and in its original packaging.
Return procedure for AD680JR-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD680JR-REEL7 Tags
-
TL431AIDBZR
Texas Instruments
-
TL431BQDBZR
Texas Instruments
-
AN431AN-ATRG1
Diodes Incorporated
-
LM4040CYM3-2.5-TR
Microchip Technology
-
LM4040CYM3-4.1-TR
Microchip Technology
-
LM4040EIM3-2.5/NOPB
Texas Instruments
-
AZ431LBNTR-G1
Diodes Incorporated
-
LM4040D20IDBZR
Texas Instruments
-
LM4041DIM3-ADJ/NOPB
Texas Instruments
-
LM4040DIM3X-2.5/NOPB
Texas Instruments
-
LM4040DIM3-2.5/NOPB
Texas Instruments
-
AZ431LANTR-G1
Diodes Incorporated
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
